This is a set of zinc (zinc) came. Zinc came is many times stronger than lead came, so please use it for the outer frame of the panel. In addition to its strength, it doesn't melt like lead came when soldering, making soldering easier. However, it won't turn completely black with general patina. If you want to dye it completely black, it's better to plate the entire zinc came with solder and dye it together with the solder, rather than buying a special patina for zinc. If you don't dye it black, it looks fine as is. Please see image 6 for detailed sizes. This is a set of 12 pieces: 6 pieces of 13mm width and 60cm length, and 6 pieces of 9.5mm width and 60cm length. Also, the glass insertion part is 4mm, so thick glass needs to be shaved beforehand. Shipping will be by courier service.